TW200945953A - Phase-control dimming electronic ballast system and the control method thereof - Google Patents

Abstract

A phase-control dimming electronic ballast system and the control method thereof, wherein the system includes a phase controller, a converter, an inverter and a system controller. Moreover, the system controller senses a firing angle from the phase controller, and adjusts the output voltage of the converter and the switching frequency of the inverter to achieve the operation of dimming.

Description

200945953 IX. Description of the invention: [Technical field to which the invention pertains] One recording system relates to a 1-phase dimming control system and its method, especially a control system and a control method 触发 a firing angle 'to achieve linear dimming. People's demand for lighting is no longer sacred, but at the same time, it can be filled with the first line of the jujube. The embarrassing field is the same as 'to adjust the light and energy waste of the required light', thus developing a dimmable lighting system. . The first: A light mode includes frequency modulation, voltage regulation and duty cycle. Schematic diagram of the first β structure. The first - week first electronic ballast _ schematic. No. — = Schematic diagram of the electronic ballast architecture. Η TRIAC phase dimming ® 调 FM, voltage regulation, duty cycle _ mode requires additional 〇 f2 phase i fine coffee circuit, such as FM controller 1G, voltage regulator controller cycle controller 14. In the foregoing, the touch S = tune = 14 will control the switching of the early switch SrS2 according to a dimming ' 'to the lamp tube [Qing dimming tank dimming signal sl, to control - power transfer (four) ϋ . Material, in the loss of people = week does not need to increase:: dTmc, and the use of phase modulation, first 'then 200945953 broadcast strict,, (four), for the section (four) 疋 phase § universal, and are used in the white must: Si However, incandescent bulbs have low luminous efficiency, causing many inconveniences, and/or fees. Therefore, incandescent bulbs will gradually be replaced by fluorescent lamps. The bubble is larger than the fluorescent lamp for the 4-body discharge lamp, and the illumination mechanism and the incandescent lamp will produce the mouth force. 2 The self-illuminating bulb can be used as long as there is a small voltage current on the filament; the light two lamp is dependent on the internal mercury discharge lamp of the lamp tube. Produce the first son and send S, at the point of the gas to make the lamp point high voltage test mercury gas (four) sub-dissociation, redundant, the Tinnan voltage sometimes needs to be hundreds of volts to more than a thousand volts. The incandescent two-gate fluid component view C is used for lighting control applications, using negative i: A=? There is a bulb illuminating problem' and (4) the fluorescent lamp is too small, and the 触发(3) gate body component is rudder firing angle (iiHngangle) ι^ϋλ The voltage of the lamp is not high enough, and the problem that the lamp point is not bright, the dimming circle is not large, and the X phase is low is encountered. The brightness is less problematic: the bubble is like a resistive load, so the control bulb is matched with the traditional stability and can be linearly changed. However, if the Xenon lamp a is used to operate under the low frequency 60Hz or 50Hz power supply, the heavy 5 change, the resistive 'lamp current is not sine wave' and there is strictness, the dimming performance will be the fluid component Li C actual The conduction angle will illuminate the TRIAC phase control fluorescent lamp, when the solar energy production problem TRI's TRI fluid element TRIAC can not start at a larger firing angle. 2. The power factor is low and the dimming range is not large. 3. The dimming change of the lamp is nonlinear, and it is not easy to adjust to the brightness of (10). 4. In the low shell of 200945953, there will be characteristics of poor dimming linearity and zero voltage switching. SUMMARY OF THE INVENTION In view of this, the present invention provides a phase dimming control system and method thereof, which employs a converter (c〇nverter'), an inverter (Inverter), and a single chip after the phase controller. The controller solves or improves the problem faced by the aforementioned thyristor element TRIAC phase control fluorescent lamp illumination

A phase dimming control system for linearly adjusting a degree of a lamp includes a phase-phase controller, a single crystal month controller, a rectifying converter, and an inverter. The phase control 11 adjusts the magnitude of an alternating voltage according to a phase. The single-chip controller is coupled to the 'spoof' to detect the phase firing angle, and the root angle ?, rectifies the alternating voltage, and the second = phase = the simple signal, the voltage becomes the DC link voltage. Inverter ^ control the thief, converter and lamp, is controlled by high frequency to wait, = FM / type modulation DC link voltage becomes - tube voltage to the lamp "two swallowing cycle 2 flow key voltage Large] spear =, Shi, husband" when the system is adopted to expand the adjustment of the domain, the first control dimming linear shirt is good or switch or voltage regulation, resulting in control responsibility cycle and switching frequency, but also m problem. The appropriate step-by-step: 详细 ϊ detailed descriptions are exemplary, is to explain the purpose and advantages of the invention for the purpose of j, and will be in the follow-up Please refer to the second figure for the phase dimming control intent of the present invention. The phase dimming control system 2 of the present invention is used for linear adjustment - ^ Lamp 03⁄4 Luminosity, phase dimming control system 2 Bao Cai 2, - rectifier 22, a converter 24, a commutation = controller 28. As early as the day after the second reference to the second picture, the phase controller 2 〇 includes - two Fluid element DRI, wherein the phase controller 2 uses the variable power R to change the thyristor The body component TERA C triggers the phase trigger angle α of an alternating voltage v cycle, and further according to the phase = voltage -. At the same time, the rectifier bank is connected to the system phase controller 20 to obtain the adjusted AC voltage, and the voltage VaC is rectified. For outputting - input voltage Vln. Another ^ early 0曰 to controller 28 is connected to phase controller 2〇, 〇 detects phase firing angle α, and according to this;:, PWM signal S1 and – high frequency signal Μα Output - Referring to the second figure, the converter 24 is coupled to the single-chip device 22, receiving a short message from the single-chip controller 28 === PWM signal S1, and modulating the input in a voltage-regulating manner Voltage: = two DC chains? Vdc. In addition, the inverter % is reduced to the single chip control f, the conversion "24" and the lamp fLamp, wherein the commutation H26 receives the high frequency signal S2 from the single controller 28 and is controlled In the high fresh = day = frequency modulation mode DC link electric house Vdc into:, use. In addition, the single-chip control sounder, and the phase trigger angle α is greater than: η two bee buzzer 29 action,提中& 角" (not "not" ^ control material ton for the lamp to reach the lowest point of the lamp 200945953 Sounding warning. Referring to the third figure, the phase controller circuit of the present invention shows that the position controller 20 includes a variable resistor VR, a thyristor element TRI^=piece_ and a capacitor c. The phase controller 2G mainly utilizes the adjustment ^ The resistance value of the 吏 resistor is 'to change the thyristor element TRIAC at the crossover frequency, and the phase trigger angle α is obtained every half cycle to achieve voltage control. If the load is considered, the output waveform is as shown in the fourth figure.平均 The average voltage Vavg of the control robber 20 is calculated by the formula (1): In the formula (1), Vm is the peak voltage of the AC voltage Vac. The average voltage Vavg and the phase curve of the phase control ^§ 2〇 can be shown in the fifth figure. As can be seen from the fifth figure, the average voltage Vavg of the output of the target 24V varies with the phase firing angle α, so that the phase controller 20 can be used to achieve the function of voltage regulation and dimming. Referring back to the second figure, the converter 24 can be a flyback converter

(Flyback Converter) or a boost converter (Β〇〇3ΐ Converter). Converter 24 is coupled to the subsequent stage of phase controller 20 via rectifier 22 and has resistive characteristics. Converter 24 takes input voltage Vin from rectifier 22 to provide a stable DC link voltage Vdc. In addition, when the phase trigger angle α of the phase controller 20 is 〇, the converter 24 operates in the discontinuous conduction mode (DCM Mode) for power factor correction, and the relationship between the wheel-in voltage Vin and the DC link voltage Vdc is as follows. (2) shown: ..(2) 200945953

In equation (2), D is the duty cycle of the power switch qi of the converter 24, Lm is the inductance value of the converter 24, the switching period of the power switch S1 of 24, and RL is the converter 2 = resistance value. Wen Shuangbei m ❹ Ο Although the phase control benefit 20 can perform the dimming function separately, it can be observed from the fifth figure that the phase controller 2 〇VVg does not appear linear with the phase trigger angle α. The change. Therefore, the = dimming has a linear change, and the y-chain voltage Vdc outputted by the converter 24 can be controlled to have a proportional relationship with the phase-trigger angle α, such as ^

V ...(3)

DC =: and == tube angle:: large: produces a lower power converter _ large converter from the lamp 24 at the lamp Lamp; and illuminates the lamp tube L_. For the DC link voltage Vdc, W with the second diagram, refer to the equivalent circuit diagram of the second tube. The parallel connection of the Figure of the present invention. For example, the 1st-type series-spectral converter converter and the lamp Lan ^PL -τ-,,, the figure, the lamp voltage Vump, the current I- and: ^ sheep P - can be given by the following formulas (4) to (6) Learned: (4)200945953 ^Lamp~ κ (if)2 \2 + (fs)2 L UJ ) {f〇QJ v — Lamp

D 八 Lamp

(5) (6) In equations (4)-(6), Vs is the root mean square value of the square wave voltage (±Vdc/2), fs is the switching frequency of the inverter 26, and RumP is Lamp Lamp equivalent resistance, characteristic impedance, natural frequency, where Lr is the resonant inductance value and Cr is the resonant capacitance value. It can be known from formula (4) to formula (6) that the lamp power Pl_ is related to the DC link voltage Vdc or the switching frequency fs of the inverter 26, as shown in the seventh or eighth figure (analog lamp) The lamp of OSRAMT8-32W is used, and the relationship is (PLamP (Vdc, fs)). Thus, the lamp power PLamp can be changed by adjusting the magnitude of the DC link voltage Vdc or adjusting the switching frequency fs of the inverter 26. 'To achieve the function of dimming. Meanwhile, if the rms value Vs of the square wave voltage (± Vdc/2) is taken as the reference phase, the phase 0 of the current iLr of the resonant network can be expressed by the formula (7):

Fs Li fsQ f〇Q { f〇fsQ f〇...(7) Since the equivalent resistance Rump value of the lamp Lamp changes with the lamp power pump and is negative resistance, it is in the dimming process. The phase Θ of the resonant current 11 200945953 iLr will change, loading, the batch chain voltage Vdc or the phase 0 of the current stream iLr of the converter 与 is shown in the figure or the tenth figure. The relationship between ° and 1, frequency fs, as in the ninth diagram, the single-chip controller 28 checks s from the phase controller 20 and converts the conversion 24 according to the phase trigger _4 S1 to control the converter. Then ^ adjusts the voltage of the DC key to the voltage = = bit firing angle. Output high frequency signal S2 to; rate: one switch "=::24 power opening rate switch Q2, Q3 has zero voltage switching characteristics. ' = test second picture 'When the phase of the invention is tuned to read phase trigger Angle α, and then output "initial" =.S1 to converter 24, converter 24 is modulated by voltage regulation, ❹ f νιη, - initial DC link voltage Vdc, about _. Controller 28 sends preheated high frequency Newsletter 2 early = Modification of the initial DC link 22, about 1 second; Γ: 5: ::P for preheating. Lamp Lamp is pre-sent to Hi to send the starting high frequency signal S2 voltage to him彳Commutation 1126 Modulates the initial DC link 卞Supply-start# voltage to the lamp _ to illuminate. Bit ΐ ί Detects the phase frequency signal S2 of the input voltage Vin again. The appropriate sigma control converter % generates appropriate: 12 200945953 DC link voltage Vdc. And the appropriate high-frequency switching, using the thin-lined _==^ 26 tube L Qing, and then achieve the purpose of linear tuning first, according to the above, the hair _ phase adjustment Light (4) money first boosts the DC link voltage Vdc i Α $ μ ^ boast, θ ι to 300 ν, and then the inverter 26 Do, do not S this % input voltage Vin phase firing angle α j to ensure that the lamp - light, and avoid because the lamp L_ can not ^ =

Ο 2 2 has: 生 fault. When the system 2 of the present invention operates the two-chip controller 28, it also detects each circuit unit in the system 2, protection, and the like. Heart failure_, overvoltage protection, overcurrent recovery, and the seventh and ninth diagrams, when the DC link voltage decreases, ΪΓΓ:Ρ=: drop, but the phase θ of the resonant current iLr increases with the same k, In the tenth figure, the switching frequency fs of the inverter 26 is increased, and the phase Θ of the turbulent flow iLr is further lags behind. This can compensate for the shortage of DC and the decrease of the voltage Vdc. In addition, referring to the eighth figure, increasing the switching frequency fs of the commutating port 26 will lower the lamp power ρ^ρ, but in a large frequency variation range (such as 45 kHz to 64 kHz), the lamp power does not change much' Therefore, the brightness change of the actual lamp Lamp is less obvious. At this time, with the DC link voltage Vdc down, there is a better linear dimming effect. In order to make the lamp Lamp have a more linear and obvious change during dimming, it can achieve the purpose of comfortable dimming while avoiding excessive loss. The phase dimming control method of the present invention uses a combination of voltage regulation and frequency modulation methods. When dimming, the phase trigger angle 〇 of the input voltage Vin at this time is detected, and linearly proportionally changes according to the magnitude of the phase trigger angle α: The DC link voltage Vdc is adjusted at the same time to adjust the switching frequency fs' of the inverter 26 to modulate the DC link voltage Vdc 13 200945953 to become the official voltage VLamP to the lamp Lamp, thereby linearly adjusting the illuminance of the lamp Lamp. Referring to FIG. 11A, it is a schematic diagram of the relationship between the lamp power and the DC link voltage of the present invention. Referring to FIG. 11B, it is a schematic diagram showing the relationship between the phase of the resonant electric current and the DC link voltage of the present invention. Wherein, Afs is the DC link voltage Vdc for each IV reduction, and the switching frequency fs of the inverter is increased, and the change 1</^32<^3<4<4<4<相位 ❹ The phase dimming control system 2 of the present invention uses a combination of voltage regulation and frequency modulation, and performs 5 weeks of light. Although this method has complementary functions, the invention of the present invention is shown in FIG. 11A and FIG. The phase dimming control (10) 2 must have an appropriate Δ fs in the dimming mode to achieve an optimized operation. In the change of frequency, the Afs is large, which may cause the lamp power to change nonlinearly. On the contrary, if the change of the lamp power p- is smaller than △ fs, the frequency increases, and the resonant current lLr phase Θ is backward. It is impossible to overcome the increase in the phase θ of the resonant current iLr caused by the DC link. Therefore, the dimming control system 2 f of the present invention selects a suitable conversion curve according to the desired dimming material, and obtains the optimal conversion rate for the optimal range or frequency control system and its method. To adjust the light' to verify the power of the lamp of the present invention is _~10%, and the phase of the lamp is in the range of 45. Weng, the phase-triggered angle of the boosting turn can be controlled - around. When the DC link voltage changes 'fs' is set to side 2, then Sf is butterflyd. Every drop, _:= 14 200945953 Voltage Vdc, switching frequency fs increased by 30 Ηζ (Δ fs = 30V). Please refer to the twelfth figure, which is a schematic diagram showing the relationship between the lamp power and the DC link voltage of the present invention. It can be seen from the twelfth figure that the method of voltage regulation and frequency modulation dimming has a good linear relationship in the lamp dimming process, and it is easy to adjust to any brightness. Meanwhile, Fig. 13A is a schematic diagram showing the measurement waveforms of the voltage VDS and the current IDS of the power switches Q2 and Q3 of the inverter 26 when the lamp operation of the present invention is at full load. Fig. 13B is a schematic diagram showing the measurement waveforms of the voltage VDS and the current IDS of the power switches Q2 and Q3 of the inverter 26 when the lamp of the present invention is operated at a light load. According to the thirteenth Ath and thirteenth B, the resonant network (Lr, Cr) in the inverter 26 is inductive, whether at full load or light load, and the power switches Q2, Q3 have zero voltage. Switching (ZVS) characteristics, therefore, has a high efficiency in the dimming process. Referring to Fig. 14, a schematic diagram of a single stage architecture combining a converter and an inverter according to the present invention. In the fourteenth figure, the single-stage architecture 3 combining the flyback converter and the half-bridge series resonant converter is connected in series with the half bridge according to the two-stage architecture of the flyback converter 24 in the second figure. The resonant converter 26 is circuit-generated by the principle of circuit simplification. The single-stage architecture 3 includes a transformer Tr, a flyback diode D5, a first switch Q2, a second switch Q3, an LC resonant network 30, a first capacitor C3, and a second capacitor C4. The transformer Tr has a primary side winding P1 and a secondary side winding P2, and the primary side winding P1 is for receiving the input voltage Vin. The flyback diode D5 is coupled to the secondary side winding P2 of the transformer Tr. The first end of the first switch Q2 is coupled to the secondary side winding P2 of the transformer Tr through the reverse polarity diode D5, and the second end of the first switch Q2 is coupled to the transformer Tr through a diode D6. Side winding P1. The second switch Q3 is coupled to the secondary side winding P2 of the transformer Tr. The LC resonant network 30 is coupled to the first switch Q2, the second switch Q3 15 200945953, and the lamp Lamp. The first capacitor C3 engages with the network 30. The second capacitor; the switch Q2 resonates with the LC; 30 〇 _ is connected to the second open_and IX spectral network. The fifteenth figure is a schematic diagram of a single-stage architecture of another 6-person of the present invention. The single in the fifteenth figure. = 舆 = device boost converter (not standard 4, is a simplified single-stage architecture, a second switch q3, _ energy storage, including a first switch Q2, ❹ - Capacitor and - second capacitor C4'" one, the first path, - the first switch - Q2. The first consumption of the energy storage inductor L is connected to the middle point of the second and second two. LC resonant network 4 It is coupled to the middle point of the city (8) Q3 and the lamp Lamp. The first capacitor, the A-f switch Q2 and the LC: the resonant network 40. The second capacitor H = the LC resonant network 4〇. Q3 and the above-mentioned 'phase dimming control word ❹ ^ adopts switching frequency control of modulated DC and inverter to expand the dimming range and avoid the frequency, formation or switch rogue purchase, In addition, the duty cycle and the switching frequency are appropriately controlled as the correction of the power miscellaneous, the control and modulation and the mechanism and the digitalization of the control circuit are described, and the integrated control is integrated into a sophisticated system. It is a preferred embodiment of the invention, but the features of the invention are not limited to the invention of any one skilled in the art. In the field, changes or modifications that can be easily thought of can be covered in the patent scope of this 16th 200945953 case. [Simple description of the picture] The brother's picture is the intention of the FM dimming electronic stability system. B is a schematic diagram of the structure of the voltage regulating electronic ballast; the first C diagram is a schematic diagram of the duty cycle dimming electronic ballast; the first D is a schematic diagram of the TRIAC phase dimming electronic ballast; the second figure is the phase of the invention The third diagram of the dimming control system is a schematic diagram of the phase controller circuit of the present invention; the fourth diagram is a schematic diagram of the input voltage waveform of the present invention; and the fifth diagram is a schematic diagram of the relationship between the average voltage and the phase firing angle of the present invention; The figure is a schematic diagram of the equal circuit of the inverter parallel lamp of the present invention; the seventh figure is a schematic diagram of the relationship between the lamp power and the DC link voltage of the present invention; the eighth disorder is the switching of the lamp power and the converter of the present invention The frequency relationship is not intended. The ninth figure is not intended to relate the resonant current phase to the DC link voltage. The tenth figure is the resonant current phase and commutation of the present invention. Schematic diagram of the switching frequency relationship; FIG. 11A is a schematic diagram of the relationship between the lamp power and the DC link voltage of the present invention, and FIG. 11B is a schematic diagram showing the relationship between the phase of the shimmering current and the DC link voltage of the present invention. 17 200945953 The twelfth figure is a schematic diagram of the measured relationship between the lamp power and the DC link voltage of the present invention. FIG. 13A is a schematic diagram of the measurement waveform of the voltage and current of the power switch at the full load of the present invention; The three-B diagram is a schematic diagram of the measurement waveforms of the voltage and current of the power switch at the time of light load of the present invention; the fourteenth figure is not intended to combine the single-stage architecture of the converter and the converter, and the fifteenth figure is Another single stage architecture incorporating a converter and an inverter is not intended. [Main component symbol description] Convention:

FM Controller 10 Power Converter 11 Voltage Regulator 12 Duty Cycle Modulation Controller 14 ❹ Input AC Power AC Gate Fluid Element TRIAC Dimming Signal SL Power Switch S1, S2 The present invention: Phase Dimming Control System 2 Phase Controller 20 Rectifier 22 18 200945953 Converter 24 Inverter 26 Single Chip Controller 28 Buzzer 29 AC Voltage Vac PWM Signal S1 High Frequency Signal S2 Lamp Lamp ❹ Input Voltage Vin DC Link Voltage Vdc Tube Voltage Vl_ Power Switch Ql, Q2 Q3

Variable resistance VR phase firing angle α

Brake fluid element TRIAC

_ Lamp voltage VumP 电流 Current I Lamp Square-wave voltage of the square wave voltage (± Vdc/2) Vs Lamp equivalent resistance RumP Spectrum inductance value Lr Resonant capacitance value Cr Current of the oscillation network iLr Combined with the flyback Single-stage architecture of converter and half-bridge series resonant converter 3 19 200945953 Transformer Tr Reversing diode D5 First switch Q2 Second switch Q3 LC resonant network 30, 40 ^ First capacitor C3 Second capacitor C4 Single stage 结合 architecture with a boost converter and a half-bridge series resonant converter 4

Energy storage inductor L 20

Claims (1)

200945953 X. Patent application scope: L production silk control system n linear adjustment - fluorescent tube light: according to a phase trigger angle, to adjust - AC one phase controller, the size of the pressure; -:: 曰: two control The device is coupled to the phase controller, the single chip control ❹ 读 = reading the phase firing angle, and outputting a second medical signal and a high frequency signal according to the phase firing angle; the angular transmission, the machine _ is connected to the a phase controller that rectifies the AC voltage and outputs an input voltage; is coupled to the single chip controller and the rectifier, and the voltage is controlled by the P WM signal to regulate voltage Modulating the input power into a constant current key voltage; the device is lightly connected to the single-chip controller, the converter and the lamp, and the converter is controlled by the high-frequency money, and the fine-tuning mode is modulated. The DC link voltage becomes a tube voltage to the lamp. 2. If you apply for the · 丨 观 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The TRuc triggers the parent > two voltages each half (four) depends on the hair, or the money control method with a single chip to control its phase firing angle. 3. The phase dimming control system according to claim i, wherein the commutation 1 § is a half bridge type series vibration converter, the half bridge series read vibration converter is connected in parallel to the lamp tube. 4. The phase dimming control system according to claim 3, wherein 21 200945953 the converter is a flyback converter. 5. The phase dimming control system of claim 3, wherein the converter is a boost converter. 6. The phase dimming control system of claim 1, wherein the single chip controller is coupled to a buzzer and controls the buzzer to operate when the phase trigger angle is greater than a critical angle. 7. The phase dimming control system of claim 1, wherein the PWM signal controls a duty cycle of the power switch in the converter to modulate the magnitude of the DC link voltage. 8. The phase dimming control system of claim 7, wherein the power switch has a zero voltage switching characteristic. 9. The phase dimming control system of claim 1, wherein the high frequency signal controls a switching frequency of the power switch in the inverter to modulate the size of the lamp. 10. A phase dimming control method for linearly adjusting the luminosity of a lamp, comprising: modulating an input voltage into a constant current chain voltage according to a phase trigger angle of the input voltage; and triggering according to the phase The angle is modulated by the frequency modulation to become a tube voltage for linearly adjusting the luminosity of the tube. 11. The phase dimming control method according to claim 10, before the step of adjusting the input voltage according to the input voltage to a constant current chain voltage step according to a phase trigger angle of the input voltage, further comprising: according to the input An initial phase firing angle of the voltage, the input voltage is modulated to become an initial DC link voltage by voltage regulation; 22 200945953 According to the initial phase firing angle, the initial DC link voltage is modulated by frequency modulation to become a preheating tube voltage, To preheat the lamp; and after a warm-up time, the initial DC link voltage is modulated by a frequency modulation method to become a starting pipe voltage for lighting the lamp. 12. The phase dimming control system of claim 4, wherein the half bridge series resonant converter and the flyback converter form a single stage architecture, the single stage architecture comprising: a transformer, Having a primary side winding and a secondary side winding, the primary 0 side winding receives the input voltage; a returning diode coupled to the transformer secondary side winding; a first switch, the first end thereof The second end of the first switch is coupled to the primary side winding of the transformer through a diode; the second switch is coupled to the second side winding of the transformer a secondary side winding of the transformer; an LC resonant network coupled to the first switch, the second switch, and the lamp; ❹ a first capacitor coupled to the first switch and the LC resonant network And a second capacitor coupled to the second switch and the LC resonant network. 13. The phase dimming control system of claim 5, wherein the half bridge series resonant converter and the boost converter form a single stage architecture, the single stage architecture comprising: a first switch a second switch coupled in series with the first switch; a first phase of the energy storage inductor receiving the input voltage, the second end coupling 23 200945953 being connected to an intermediate point between the first switch and the second switch An LC resonant network coupled between the first switch and the second switch, and the lamp; a first capacitor coupled to the first switch and the IX resonant network; The second capacitor is coupled to the second switch and the LC resonant network. ❹ 24